Title :
A Novel Scheme for Seamless Integration of ROF With Centralized Lightwave OFDM-WDM-PON System
Author :
Chen, Lin ; Yu, J.G. ; Wen, Shuangchun ; Lu, J. ; Dong, Z. ; Huang, M. ; Chang, G.K.
Author_Institution :
Minist. of Educ., Hunan Univ., Changsha, China
fDate :
7/15/2009 12:00:00 AM
Abstract :
We have experimentally demonstrated a novel transmission system for seamless integration of ROF with centralized lightwave OFDM-WDM-PON based on an integrated external modulator. At the one of two arms of the integrated external modulator, the optical carrier suppression (OCS) is realized to generate 40-GHz optical millimeter-wave (mm-wave) and up-converted baseband data signal as wireless signal. In another arm of the integrated external modulator, 16 quadrature amplitude modulation intensity-modulated OFDM signals at 10 Gbit/s are used for downstream transmission as wired signal based on double sideband modulation. By using one intensity modulator (IM), the downstream RF OFDM signal is remodulated for upstream on-off keying (OOK) data at 2.5 Gbit/s because of its downstream RZ shape waveform. The 10-Gbit/s wired signal, 2.5-Gbit/s wireless signal, and 2.5-Gbit/s upstream signal have been transmitted over 20-km single mode fiber (SMF) successfully.
Keywords :
OFDM modulation; amplitude shift keying; intensity modulation; microwave photonics; optical fibre networks; optical frequency conversion; optical modulation; quadrature amplitude modulation; radio-over-fibre; wavelength division multiplexing; OOK; RZ shape waveform; bit rate 10 Gbit/s; bit rate 2.5 Gbit/s; centralized lightwave OFDM-WDM-PON system; distance 20 km; double sideband modulation; downstream transmission; integrated external modulator; intensity modulator; on-off keying; optical carrier suppression; optical millimeter-wave generation; passive optical network; quadrature amplitude modulation; radio-over-fibre; seamless integration; single mode fiber; up-converted baseband data signal; wavelength division multiplexing; wireless signal; Integrated external modulator; optical millimeter wave generation; orthogonal frequency-division multiplexing (OFDM); radio over fiber (ROF); wavelength-division-multiplexed passive optical network (WDM-PON);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2016984
